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硝酸与金属的反应,受浓度、温度等条件的影响,其反应产物不同.Fe与HNO3反应,首先生成Fe3+,Fe3+有较强氧化性,可与Fe反应生成Fe2+,所以,Fe与HNO3反应的生成物与Fe和HNO3的物质的量有关.1铁与稀HNO3的反应规律Fe+4HNO3=Fe(NO3)3+NO↑+2H2O①3Fe+8HNO3=3Fe(NO3)2+2NO↑+4H2O②(1)
The reaction of nitric acid and metal is affected by the conditions such as concentration and temperature, and the reaction product is different. When Fe reacts with HNO3, it firstly generates Fe3+. Fe3+ has strong oxidizing ability and can react with Fe to form Fe2+. Therefore, Fe reacts with HNO3. The product is related to the amount of substances of Fe and HNO3. 1 The reaction of iron with dilute HNO3 Fe+4HNO3=Fe(NO3)3+NO↑+2H2O13Fe+8HNO3=3Fe(NO3)2+2NO↑+4H2O2(1)